Runtime task mapping for lifetime budgeting in many-core systems

Wang, Liang, Wang, Xiaohang, Leung, Ho Fung and Mak, Terrence (2018) Runtime task mapping for lifetime budgeting in many-core systems. In FDL 2017 - Proceedings of the 2017 Forum on Specification and Design Languages. vol. 2017-September, IEEE Computer Society. pp. 1-8 . (doi:10.1109/FDL.2017.8303900).

Abstract

Due to technology scaling, lifetime reliability is becoming one of major design constraints in the design of future many-core systems. In this paper, we propose a novel runtime mapping scheme which can dynamically map the applications given a lifetime reliability constraint. A borrowing strategy is adopted to manage the lifetime in a long-term scale, and the lifetime constraint can be relaxed in short-term scale when the communication performance requirement is high. The through-put can be improved because the communication performance of communication intensive applications is optimized, and mean-while the waiting time of computation intensive application is reduced. An improved neighborhood allocation method is proposed for the runtime mapping scheme. Moreover, we propose a method to effectively classify communication intensive applications and computation intensive applications. The experimental results show that compared to the state-of-the-art lifetime-constrained mapping, the proposed scheme has more than 20% throughput improvement in average.

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